Molecular structure engineering of dielectric fluorinated polymers for enhanced performances of triboelectric nanogenerators

We present the molecular structure engineering of fluorinated dielectric polymer for enhancement of triboelectric performance, which depends on different number of fluorine units, molecular weight, and process condition. The molecular packing structure affects the change of surface potential as well as the free volume in the polymer matrix, resulting in the control of dielectric constant and final triboelectric performances. Our molecular engineering strategy can be a feasible method to modify the triboelectric output performance and can be extended into diverse energy harvesting and sensing devices.291